Manufacture of rubber hose-pipes, rubber tubing, or the like.



N0. 7l0,688. Patented Oct. 7, I902. G. .E. HEYL-DIA.

MANUFACTURE OF RUBBER HOSE PIPES, RUBBER TUBING, OR THE LIKE.

(Application filed July 11, 1901,)

(No Model.)

LL I Y2 k if my EUNTTED STATES PATENT OFFICE.

GEORGE EDlVARD I-lEYL-DIA, OF XVARRINGTON, ENGLAND.

MANUFACTURE OF RUBBER HOSE-PIPES, RUBBER'TUBING, 0R THELlKE.

SPECIFICATION forming part of Letters Patent No. 710,688, dated October'7, 1902.

Application filed July 11,1901. Serial No. 67,919. -(No specimens.)

To all whom it may concern:

Be it known that I, GEORGE EDW'ARD HEYL-v DIA, engineer, a subject ofthe King of Great Britain,residing in vlfarrington, in the county ofLancaster,England,(whose private address is Birk Crag, 236 Great Clowesstreet, Higher Broughton, Manchester, in the county of Lancaster,aforesaid,) have invented certain new and useful Improvements in theManufacture of Rubber Hose-Pipes, Rubber Tubing, or the Like, (for whichprovisional protection has been made in England under No. 1,157 anddated January 17, 1901,) of which the following is a specification.

This invention relates to the manufacture of rubber hose-pipes, rubbertubes, and the like, and has for its object to greatly cheapen the costof production by enabling a large number of pipes or tubings to be madeat one time and a saving in the amount of material necessary, ascompared, for instance, with the squirting process.

I attain the object of my invention by forming the pipes or tubing inthe following manner: I take a number of cores,which may be solid, suchas wire of the desired thickness, or may be collapsible, such as ahollow rubber core adapted to be inflated with air or other fluid and tobe deflated on completion of the process to enable it to be withdrawnfrom the finished article, and I apply about these cores unvulcanizedrubber,with or without other covering materials, in a longitudinalmanner by running longitudinal strips of the material above and belowthe core and passing the whole through grooved rollers, which pinch theupper and lower strips together at the sides and unite them in themanner in which electric conductors are covered longitudinally withinsulation. For this purpose I may utilize any existing longitudinalcovering-machine at present in use for covering electric conductors; butfor the better carrying out of my invention, which requires the coveringmaterial and cores to be drawn off the containing-drums in a controlledand definite rate, as required by the working of the pressing-rollers, Iprefer to use a longitudinal machine having the automatic hauloffmechanism and also the other improvements, as set forth in my Patent No.689,614, dated the Zetth day of December, 1901.

In order to illustrate the carrying out of my improved process ofmanufacture, reference will be had to the accompanying drax ings, inwhich I Figure -1 is a diagrammatic elevation of the longitudinalcovering-machine described in my United States patent aforesaid, which Iprefer to use. Fig. 2 is a cross-section on the line 00 5c of Fig. 1.Fig. 3 is a front view of one pair of grooved rolls on -a 1arger scale,showing the tubing or hose formed about their cores within the grooves.Fig. 4 is a side view of a collapsible core.

The wires 10, forming thesolid cores, are drawn off the feed-drums-C,Fig. 1, and pass over the guide-pulleys D E to the grooved rollers a ctof the covering device A, several wires being preferably fed to eachgroove in a parallel manner, as will be seen in Fig. 3, to facilitatewithdrawal of the solid core after the tubing has been formed about it,as by withdrawing first the central wire of each core the remainingwires can be easilywithdrawn.

A solid core is preferable in most cases; but where acollapsible core isused it may be made of rubber and braiding or canvas or other materialhaving great tensile strength orbuilt up, in fact, or formed somethinginthe same manner as a bicycle-tire at the present time, as shown in Fig.4, in which on represents the rubber layers, and n the canvas layers,the ends being closed and an inflating-nozzle 0 provided. The hollowcore should be inflated with air or other fluid to a sufficiently hardextent to withstand the pressure of the rollers.

The cores to and the upper and under rubber covering-strips o t drawnoff the containing drums or rollers b b 'or the like pass through thegrooved rollers art, by which the two opposing sheets are broughttogether between the cores and the meeting portions of the stripspressed firmly together and in this manner integrally united, as shownin Fig. 3. This operation results in the formation of a series of tubeseach surrounding its core and connected together between the adjacentcores. The hose 72- thus formed is'guided over pulleys F and G to thetake-off drums B or is wound on trays in chalk or the like and thenvulcanized in the ordinary manner. The take-off drums B are driven byfriction-roll- ICC ers H on the shafts I, which are rotated by gearing KJ L M and O N from the drivingshaft of the covering device A, and thecores bearing the hose or tubing h are guided and traversed on the drumsB by the traverse mechanism P Q, operated automatically by the gearing RS T U VW from one of the shafts I, as described in my aforesaid patent.After the vulcanizing the cores w are withdrawn, as before described,from the tubing, of course first deflatingif collapsible cores have beenused.

The rubber covering material, which is of sufficient width to extendover the upper or under portions of all the cores, can be fed to form asingle layer or various layers, according to the number of containingdrums or rollers b I) provided, and canvas or braid or otherstrengthening material may be similarly fed from similar rollerssimultaneously in between the rubber covering and the whole pinchedtogether through a single pair of grooved rolls a, or where severallayers are applied either one or several pairs of pressing-rolls may beused to receive the partlyformed hose, with a successive application ofeach layer. The drawings show two pairs of grooved rolls a and a as anexample.

The hose-pipe, rubber tubing, or the like made according to my inventioncan subsequently be braided or armored in any known manner or can beleft simply as it comes from the vulcanizer.

I declare that what I claim is i The process of making rubber-hosetubing and the like which consists in imparting a feeding movement toaplurality of wires, ar ranging said wires into groups to form individual cores, each group consisting of a central wire and surroundingwires, applying to opposite sides of the cores opposing sheets ofmaterial to form the hose, and feeding the same simultaneously with thecores in the direction of movement of the same, uniting the sheetsbetween the cores, withdrawing the central wire of each core to affordspace for the separation of the surrounding wires, and finallywithdrawing the remaining wires.

In witness whereof I have hereunto signed my name, this 24th day ofJune, 1901, in the presence of two subscribing witnesses.

GEORGE ED l/VARD HEYL-DIA.

Witnesses:

JOSEPH KEDDY, SIDNEY W. D01).

